Q: What are the prime factors of the number 210,402?

 A: 2, 3, 11689

Why are those the prime factors of the number 210,402?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 210,402

210,402
Factor Arrows
2105,201
Factor Arrows
335,067
Factor Arrows
311,689

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 11689

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 11,689 = 210,402

This can also be written as 21 x 32 x 11,6891 = 210,402

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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